class LabelableSegmentationEdgesLayer( SegmentationEdgesLayer ):
"""
Shows a set of user-labeled edges.
"""
labelsChanged = pyqtSignal( dict ) # { id_pair, label_class }
def __init__(self, datasource, label_class_pens, initial_labels={}, delay_ms=1000):
# Class 0 (no label) is the default pen
super(LabelableSegmentationEdgesLayer, self).__init__( datasource, default_pen=label_class_pens[0] )
self._delay_ms = delay_ms
self._label_class_pens = label_class_pens
# Initialize the labels and pens
self.overwrite_edge_labels(initial_labels)
self._buffered_updates = {}
# To avoid sending lots of single updates if the user is clicking quickly,
# we buffer the updates into a dict that is only sent after a brief delay.
self._timer = QTimer(self)
self._timer.setInterval(self._delay_ms)
self._timer.setSingleShot(True)
self._timer.timeout.connect( self._signal_buffered_updates )
def overwrite_edge_labels(self, new_edge_labels):
self._edge_labels = defaultdict(lambda: 0, new_edge_labels)
# Change the pens accordingly
pen_table = {}
for id_pair, label_class in self._edge_labels.items():
pen_table[id_pair] = self._label_class_pens[label_class]
self.pen_table.overwrite(pen_table)
def handle_edge_clicked(self, id_pair):
"""
Overridden from SegmentationEdgesLayer
"""
num_classes = len(self._label_class_pens)
old_class = self._edge_labels[id_pair]
new_class = (old_class+1) % num_classes
# Update the display
self.pen_table[id_pair] = self._label_class_pens[new_class]
# For now, edge_labels dictionary will still contain 0-labeled edges.
# We could delete them, but why bother?
self._edge_labels[id_pair] = new_class
# Buffer the update for listeners
self._buffered_updates[id_pair] = new_class
# Reset the timer
self._timer.start()
def _signal_buffered_updates(self):
updates = self._buffered_updates
self._buffered_updates = {}
self.labelsChanged.emit( updates )
class DelayWidget(WebWidget):
def __init__(self, name, cfg, parent = None):
WebWidget.__init__(self, name, parent)
self.config = cfg
self.url.setUrl(self.config.loadLinks()[str(self.objectName())]['data'])
self.timer = QTimer(self)
self.timer.setInterval(1000)
self.timer.setSingleShot(1)
self.timeoutTimer = QTimer(self)
self.timeoutTimer.setInterval(10000)
self.timeoutTimer.setSingleShot(1)
self.connect(self.timeoutTimer , SIGNAL('timeout()') , self.clear)
self.connect(self.timer , SIGNAL('timeout()') , self.reload_)
self.connect(self , SIGNAL('done()') , self.clear)
def clear(self):
self.config.saveDelayWidgetBusy(False)
def reload_(self):
if not self.isVisible(): return
if not self.timeoutTimer.isActive():
self.timeoutTimer.start()
if self.config.loadDelayWidgetBusy():
self.timer.start()
else:
self.timeoutTimer.stop()
self.config.saveDelayWidgetBusy(True)
WebWidget.reload_(self)
def _processPendingEvents():
"""Process pending application events."""
# Create an event loop to run in. Otherwise, we need to use the
# QApplication main loop, which may already be running and therefore
# unusable.
qe = QEventLoop()
# Create a single-shot timer. Could use QTimer.singleShot(),
# but can't cancel this / disconnect it.
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(qe.quit)
timer.start(1)
# Wait for an emitted signal.
qe.exec_()
# Clean up: don't allow the timer to call qe.quit after this
# function exits, which would produce "interesting" behavior.
timer.stop()
# Stopping the timer may not cancel timeout signals in the
# event queue. Disconnect the signal to be sure that loop
# will never receive a timeout after the function exits.
timer.timeout.disconnect(qe.quit)
def register_timer(self, time_delta, callback):
"""Registers a callback function to be run after time_delta ms."""
timer = QTimer(self.window)
timer.setSingleShot(True)
timer.timeout.connect(callback)
timer.setInterval(time_delta)
timer.start()
class ByteView(QTableView):
"""Byte table view."""
def __init__(self, parent=None):
QTableView.__init__(self, parent)
self.autoscroll_toggle = QAction("Autoscroll", self)
self.autoscroll_toggle.setCheckable(True)
self.autoscroll_toggle.setChecked(False)
self.autoscroll_timer = QTimer(self)
self.autoscroll_timer.setSingleShot(True)
self.autoscroll_timer.timeout.connect(self.scrollToBottom)
def contextMenuEvent(self, event):
menu = QMenu()
menu.addAction(self.autoscroll_toggle)
menu.exec_(event.globalPos())
def col_added(self):
self.resizeColumnsToContents()
def row_added(self):
if self.autoscroll_toggle.isChecked() and not self.autoscroll_timer.isActive():
self.autoscroll_timer.start(50)
class _StatusBar(QStatusBar):
"""Extended status bar. Supports HTML messages
"""
def __init__(self, *args):
QStatusBar.__init__(self, *args)
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self.setSizeGripEnabled(False)
self.setStyleSheet("QStatusBar {border: 0} QStatusBar::item {border: 0}")
self._label = QLabel(self)
self._label.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self._label.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
self._label.setStyleSheet("color: red")
self.addWidget(self._label)
self._timer = QTimer()
self._timer.setSingleShot(True)
self._timer.timeout.connect(self.clearMessage)
def showMessage(self, text, timeout=0):
"""QStatusBar.showMessage()
"""
self._label.setText(text)
self._timer.stop()
if timeout > 0:
self._timer.start(timeout)
def clearMessage(self):
"""QStatusBar.clearMessage()
"""
self._label.clear()
def __init__(self, thread, parent):
QDialog.__init__(self, parent)
self.ui = Ui_PlotPreview()
self.ui.setupUi(self)
self.parent = parent
icon = QIcon()
icon.addPixmap(QPixmap(":/icons/reload.png"), QIcon.Normal, QIcon.Off)
self.update_btn = QPushButton(icon, "Update")
self.ui.buttonBox.addButton(self.update_btn, QDialogButtonBox.ApplyRole)
self.update_btn.clicked.connect(self.render_image)
self._pix = None
self._image_list = None
self._thread = thread
self.scene = QGraphicsScene()
self.scene.setSceneRect(0,0,1,1)
self.ui.imageView.setScene(self.scene)
self.pix_item = None
self.ui.imageView.setEnabled(False)
self.ui.imageView.setInteractive(False)
self.ui.imageView.setDragMode(QGraphicsView.ScrollHandDrag)
self.pic_w = None
self.pic_c = None
self.show_pic_w = None
self.show_pic_c = None
timer = QTimer(self)
timer.setSingleShot(True)
timer.setInterval(500)
self.timer = timer
timer.timeout.connect(self.render_image)
if parameters.instance.use_OpenGL:
self.ui.imageView.setViewport(QGLWidget(QGLFormat(QGL.SampleBuffers)))
class ErrorMessageFilter(QObject):
"""
In a parallel program, the same error may occur in several threads in close succession.
For example, all slice views will notice a "filter too large" error simultaneously.
This class collects error messages for a certain time (currently: 1000ms) and then
displays each unique message only once.
"""
def __init__(self, parent):
super(QObject, self).__init__(parent)
self.messages = {}
self.timer = QTimer(self)
self.timer.setSingleShot(True)
self.timer.setInterval(1000)
self.connect(self.timer, QtCore.SIGNAL("timeout()"), self.timeout)
def showErrorMessage(self, caption, text):
if not self.timer.isActive():
self.timer.start()
self.messages[caption] = text
def timeout(self):
# Must copy now because the eventloop is allowed to run during QMessageBox.critical, below.
# That is, self.messages might change while the loop is executing (not allowed).
messages = copy.copy(self.messages)
for caption, text in messages.iteritems():
QMessageBox.critical(self.parent(), caption, text)
self.messages = {}
def wait(self, time_ms, callback, onredirect=None, onerror=None):
"""
Wait for time_ms, then run callback.
If onredirect is True then the timer is cancelled if redirect happens.
If onredirect is callable then in case of redirect the timer is
cancelled and this callable is called.
If onerror is True then the timer is cancelled if a render error
happens. If onerror is callable then in case of a render error the
timer is cancelled and this callable is called.
"""
timer = QTimer()
timer.setSingleShot(True)
timer_callback = functools.partial(self._on_wait_timeout,
timer=timer,
callback=callback,
)
timer.timeout.connect(timer_callback)
self.logger.log("waiting %sms; timer %s" % (time_ms, id(timer)), min_level=2)
timer.start(time_ms)
self._active_timers.add(timer)
if onredirect:
self._timers_to_cancel_on_redirect[timer] = onredirect
if onerror:
self._timers_to_cancel_on_error[timer] = onerror
class AsyncCaller(object):
"""Call a Python function after a delay."""
def __init__(self, delay=10):
self._delay = delay
self._timer = None
def _create_timer(self, f):
self._timer = QTimer()
self._timer.timeout.connect(f)
self._timer.setSingleShot(True)
def set(self, f):
"""Call a function after a delay, unless another function is set
in the meantime."""
self.stop()
self._create_timer(f)
self.start()
def start(self):
"""Start the timer and call the function after a delay."""
if self._timer:
self._timer.start(self._delay)
def stop(self):
"""Stop the current timer if there is one and cancel the async call."""
if self._timer:
self._timer.stop()
self._timer.deleteLater()
def main():
global trading_account
global trading_account_name
global qtimer
# start connection to etrade
etradepy.login()
accounts = etradepy.listAccounts()
trading_account = accounts['json.accountListResponse']['response'][0][
'accountId']
trading_account_name = accounts['json.accountListResponse']['response'][0][
'accountDesc']
app = QtGui.QApplication(sys.argv)
form = EtradeApp()
form.show()
form.statusBar.showMessage(
accounts['json.accountListResponse']['response'][0]['accountDesc'])
form.restoreState()
#
# This is a kludge to automatically place a stop loss order after placing a buy or a sell_short
# Ideally we'd get a response from the server after the initial order executes, but instead
# we set a short delay on qtimer in the placeEquityOrder function
#
qtimer = QTimer()
qtimer.setSingleShot(True)
qtimer.timeout.connect(form.recordStopLossOrder)
app.aboutToQuit.connect(form.saveState)
app.exec_()
def wait(self, time_ms, callback, onredirect=None, onerror=None):
"""
Wait for time_ms, then run callback.
If onredirect is True then the timer is cancelled if redirect happens.
If onredirect is callable then in case of redirect the timer is
cancelled and this callable is called.
If onerror is True then the timer is cancelled if a render error
happens. If onerror is callable then in case of a render error the
timer is cancelled and this callable is called.
"""
timer = QTimer()
timer.setSingleShot(True)
timer_callback = functools.partial(
self._on_wait_timeout,
timer=timer,
callback=callback,
)
timer.timeout.connect(timer_callback)
self.logger.log("waiting %sms; timer %s" % (time_ms, id(timer)),
min_level=2)
timer.start(time_ms)
self._active_timers.add(timer)
if onredirect:
self._timers_to_cancel_on_redirect[timer] = onredirect
if onerror:
self._timers_to_cancel_on_error[timer] = onerror
class MessageDialog(QDialog):
def __init__(self, parent = None):
QDialog.__init__(self, parent)
self.setWindowFlags(Qt.Dialog | Qt.FramelessWindowHint)
self.layout = QVBoxLayout(self)
self.label = ScaledLabel()
self.label.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
self.layout.addWidget(self.label)
self.timer = QTimer()
self.timer.timeout.connect(self.hide)
self.timer.setSingleShot(True)
def showMessage(self, message):
self.label.setText(message)
self.show()
self.raise_()
def showMessageTimed(self, message, timeout = 3000):
self.showMessage(message)
self.timer.start(timeout)
def highlightReferencingFeature(self):
self.deleteHighlight()
if not self.relation.isValid() or not self.referencingFeature.isValid(
):
return
self.featureHighlight = QgsHighlight(
self.iface.mapCanvas(), self.referencingFeature.geometry(),
self.relation.referencingLayer())
settings = QSettings()
color = QColor(
settings.value("/Map/highlight/color",
QGis.DEFAULT_HIGHLIGHT_COLOR.name()))
alpha = int(
settings.value("/Map/highlight/colorAlpha",
QGis.DEFAULT_HIGHLIGHT_COLOR.alpha()))
bbuffer = float(
settings.value("/Map/highlight/buffer",
QGis.DEFAULT_HIGHLIGHT_BUFFER_MM))
minWidth = float(
settings.value("/Map/highlight/minWidth",
QGis.DEFAULT_HIGHLIGHT_MIN_WIDTH_MM))
self.featureHighlight.setColor(color)
color.setAlpha(alpha)
self.featureHighlight.setFillColor(color)
self.featureHighlight.setBuffer(bbuffer)
self.featureHighlight.setMinWidth(minWidth)
self.featureHighlight.show()
timer = QTimer(self)
timer.setSingleShot(True)
timer.timeout.connect(self.deleteHighlight)
timer.start(3000)
def _check_path_exists(self, path, text_box):
#Validates if the specified folder exists
dir = QDir()
if not dir.exists(path):
msg = self.tr(u"'{0}' directory does not exist.".format(path))
self.notif_bar.insertErrorNotification(msg)
#Highlight textbox control
text_box.setStyleSheet(INVALIDATESTYLESHEET)
timer = QTimer(self)
#Sync interval with that of the notification bar
timer.setInterval(self.notif_bar.interval)
timer.setSingleShot(True)
#Remove previous connected slots (if any)
receivers = timer.receivers(SIGNAL('timeout()'))
if receivers > 0:
self._timer.timeout.disconnect()
timer.start()
timer.timeout.connect(lambda:self._restore_stylesheet(
text_box)
)
return False
return True
class _GlobalUpdateWordSetTimer:
"""Timer updates word set, when editor is idle. (5 sec. after last change)
Timer is global, for avoid situation, when all instances
update set simultaneously
"""
_IDLE_TIMEOUT_MS = 1000
def __init__(self):
self._timer = QTimer()
self._timer.setSingleShot(True)
self._timer.timeout.connect(self._onTimer)
self._scheduledMethods = []
def schedule(self, method):
if not method in self._scheduledMethods:
self._scheduledMethods.append(method)
self._timer.start(self._IDLE_TIMEOUT_MS)
def cancel(self, method):
"""Cancel scheduled method
Safe method, may be called with not-scheduled method"""
if method in self._scheduledMethods:
self._scheduledMethods.remove(method)
if not self._scheduledMethods:
self._timer.stop()
def _onTimer(self):
method = self._scheduledMethods.pop()
method()
if self._scheduledMethods:
self._timer.start(self._IDLE_TIMEOUT_MS)
class AsyncCaller(object):
"""Call a Python function after a delay."""
def __init__(self, delay=10):
self._delay = delay
self._timer = None
def _create_timer(self, f):
self._timer = QTimer()
self._timer.timeout.connect(f)
self._timer.setSingleShot(True)
def set(self, f):
"""Call a function after a delay, unless another function is set
in the meantime."""
self.stop()
self._create_timer(f)
self.start()
def start(self):
"""Start the timer and call the function after a delay."""
if self._timer:
self._timer.start(self._delay)
def stop(self):
"""Stop the current timer if there is one and cancel the async call."""
if self._timer:
self._timer.stop()
self._timer.deleteLater()
def private_call_later(self, callback, delay=None):
if delay is None:
delay = 0
if not isinstance(delay, (float, int)):
raise ScriptError({
"argument": "delay",
"message": "splash:call_later delay must be a number",
"splash_method": "call_later",
})
delay = int(float(delay)*1000)
if delay < 0:
raise ScriptError({
"argument": "delay",
"message": "splash:call_later delay must be >= 0",
"splash_method": "call_later",
})
if lupa.lua_type(callback) != 'function':
raise ScriptError({
"argument": "callback",
"message": "splash:call_later callback is not a function",
"splash_method": "call_later",
})
qtimer = QTimer(self.tab)
qtimer.setSingleShot(True)
timer = _ExposedTimer(self, qtimer)
run_coro = self.get_coroutine_run_func(
"splash:call_later", callback, return_error=timer.store_error
)
qtimer.timeout.connect(run_coro)
qtimer.start(delay)
return timer
def _check_path_exists(self, path, text_box):
#Validates if the specified folder exists
dir = QDir()
if not dir.exists(path):
msg = self.tr(u"'{0}' directory does not exist.".format(path))
self.notif_bar.insertErrorNotification(msg)
#Highlight textbox control
text_box.setStyleSheet(INVALIDATESTYLESHEET)
timer = QTimer(self)
#Sync interval with that of the notification bar
timer.setInterval(self.notif_bar.interval)
timer.setSingleShot(True)
#Remove previous connected slots (if any)
receivers = timer.receivers(SIGNAL('timeout()'))
if receivers > 0:
self._timer.timeout.disconnect()
timer.start()
timer.timeout.connect(lambda: self._restore_stylesheet(text_box))
return False
return True
class Plugin:
def __init__(self):
self.timer = QTimer(None)
self.timer.setInterval(10000)
self.timer.timeout.connect(self.Timeout)
self.timer.setSingleShot(True)
self.action = QAction("Preview mode", None)
self.action.setCheckable(True)
self.action.triggered.connect(self.Enabled)
clementine.ui.AddAction("playlist_menu", self.action)
clementine.player.Playing.connect(self.Playing)
clementine.player.Paused.connect(self.Stopped)
clementine.player.Stopped.connect(self.Stopped)
self.enabled = False
def Enabled(self, enabled):
self.enabled = enabled
if enabled:
if clementine.player.GetState() == 2: # Playing
self.timer.start()
else:
self.timer.stop()
def Playing(self):
if self.enabled:
self.timer.start()
def Stopped(self):
self.timer.stop()
def Timeout(self):
if clementine.player.GetState() == 2:
clementine.player.Next()
def __init__ (self, parent = None):
QTimer.__init__ (self, parent)
self.startTime = 0
self.ispaused = False
self.interval = 0
QTimer.setSingleShot(self,True)
self.timeout.connect(self._timeend)
class PreviewEnabledRenderingFunction(object):
def __init__(self, scene, timeout=250):
self.scene = scene
self._fine_rendering_allocated_time = None
self._timer = QTimer()
self._timer.setSingleShot(True)
self._timer.setInterval(timeout)
QObject.connect(self._timer, SIGNAL('timeout()'), self.render)
def abort_rendering(self):
self._timer.stop()
if self._fine_rendering_allocated_time is not None:
self.scene.renderer.allocated_render_time = \
self._fine_rendering_allocated_time
self._fine_rendering_allocated_time = None
def render(self):
self.scene.renderer.allocated_render_time = \
self._fine_rendering_allocated_time
self.scene.render()
def render_preview(self):
self._fine_rendering_allocated_time = \
self.scene.renderer.allocated_render_time
self.scene.renderer.allocated_render_time = 0
self.scene.render()
self._timer.start()
def __call__(self):
self.render_preview()
class ErrorMessageFilter(QObject):
"""
In a parallel program, the same error may occur in several threads in close succession.
For example, all slice views will notice a "filter too large" error simultaneously.
This class collects error messages for a certain time (currently: 200ms) and then
displays each unique message only once.
"""
def __init__(self, parent):
super(QObject, self).__init__(parent)
self.messages = {}
self.timer = QTimer(self)
self.timer.setSingleShot(True)
self.timer.setInterval(200)
self.connect(self.timer, QtCore.SIGNAL("timeout()"), self.timeout)
def showErrorMessage(self, caption, text):
if not self.timer.isActive():
self.timer.start()
self.messages[text] = caption
def timeout(self):
for text, caption in self.messages.iteritems():
QMessageBox.critical(self.parent(), caption, text)
self.messages = {}
class SequenceInstrumentController(NonBlockingInstrumentController):
def __init__(self, instrument_config):
NonBlockingInstrumentController.__init__(self, instrument_config)
# circular list of command sequence
self.commands = deque(instrument_config.operation_commands)
self.tx_timer = QTimer()
self.tx_timer.setSingleShot(True)
def run(self):
# define the timer used to wait for the next command
self.tx_timer.timeout.connect(self.send_command)
# send the first command
self.send_command()
NonBlockingInstrumentController.run(self)
def quit(self):
self.tx_timer.stop()
NonBlockingInstrumentController.quit(self)
def send_command(self):
# send next command
cmd = self.commands[0]
self.new_command.emit(cmd)
# wait for next command
self.tx_timer.start(cmd.param)
# advance command list
self.commands.rotate(-1)
def get(self, url=None, script=None, key=None):
"""Load given url in webkit and return html when loaded
"""
self.base_url = self.base_url or url # set base URL if not set
html = self.cache.get(key)
if html:
if self.debug: print 'load cache', key
self.setHtml(html, QUrl(self.base_url))
elif url:
self.load(QUrl(url))
elif script:
self.js(script)
loop = QEventLoop()
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(loop.quit)
self.loadFinished.connect(loop.quit)
timer.start(self.timeout * 1000)
loop.exec_() # delay here until download finished or timeout
if timer.isActive():
# downloaded successfully
timer.stop()
html = self.current_html()
if key:
self.cache[key] = html
self.inject_jquery()
else:
# didn't download in time
print 'Download timeout'
html = ''
return html
class Overlay(QDialog):
shown = pyqtSignal()
def __init__(self, keyPressHandler, parent=None):
QDialog.__init__(self, parent)
self.keyPressHandler = keyPressHandler
self.setWindowFlags(Qt.Dialog | Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint)
self.setFocusPolicy(Qt.NoFocus)
# Causes issues in some non-compositing WM's (notably Fluxbox)
if QX11Info.isCompositingManagerRunning():
self.setAttribute(Qt.WA_TranslucentBackground)
self.timer = QTimer()
self.timer.setSingleShot(True)
self.timer.timeout.connect(self.hide)
def showTimed(self, interval=2000):
self.show()
self.timer.start(interval)
def keyPressEvent(self, event):
if not self.keyPressHandler(event):
QDialog.keyPressEvent(self, event)
class _GlobalUpdateWordSetTimer:
"""Timer updates word set, when editor is idle. (5 sec. after last change)
Timer is global, for avoid situation, when all instances
update set simultaneously
"""
_IDLE_TIMEOUT_MS = 1000
def __init__(self):
self._timer = QTimer()
self._timer.setSingleShot(True)
self._timer.timeout.connect(self._onTimer)
self._scheduledMethods = []
def schedule(self, method):
if not method in self._scheduledMethods:
self._scheduledMethods.append(method)
self._timer.start(self._IDLE_TIMEOUT_MS)
def cancel(self, method):
"""Cancel scheduled method
Safe method, may be called with not-scheduled method"""
if method in self._scheduledMethods:
self._scheduledMethods.remove(method)
if not self._scheduledMethods:
self._timer.stop()
def _onTimer(self):
method = self._scheduledMethods.pop()
method()
if self._scheduledMethods:
self._timer.start(self._IDLE_TIMEOUT_MS)
class _StatusBar(QStatusBar):
"""Extended status bar. Supports HTML messages
"""
def __init__(self, *args):
QStatusBar.__init__(self, *args)
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self.setSizeGripEnabled(False)
self.setStyleSheet(
"QStatusBar {border: 0} QStatusBar::item {border: 0}")
self._label = QLabel(self)
self._label.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self._label.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
self._label.setStyleSheet("color: red")
self.addWidget(self._label)
self._timer = QTimer()
self._timer.setSingleShot(True)
self._timer.timeout.connect(self.clearMessage)
def showMessage(self, text, timeout=0):
"""QStatusBar.showMessage()
"""
self._label.setText(text)
self._timer.stop()
if timeout > 0:
self._timer.start(timeout)
def clearMessage(self):
"""QStatusBar.clearMessage()
"""
self._label.clear()
def currentMessage(self):
return self._label.text()
class LabelableSegmentationEdgesLayer( SegmentationEdgesLayer ):
"""
Shows a set of user-labeled edges.
"""
labelsChanged = pyqtSignal( dict ) # { id_pair, label_class }
def __init__(self, datasource, label_class_pens, initial_labels={}, delay_ms=1000):
# Class 0 (no label) is the default pen
super(LabelableSegmentationEdgesLayer, self).__init__( datasource, default_pen=label_class_pens[0] )
self._delay_ms = delay_ms
self._label_class_pens = label_class_pens
# Initialize the labels and pens
self.overwrite_edge_labels(initial_labels)
self._buffered_updates = {}
# To avoid sending lots of single updates if the user is clicking quickly,
# we buffer the updates into a dict that is only sent after a brief delay.
self._timer = QTimer(self)
self._timer.setInterval(self._delay_ms)
self._timer.setSingleShot(True)
self._timer.timeout.connect( self._signal_buffered_updates )
def overwrite_edge_labels(self, new_edge_labels):
self._edge_labels = defaultdict(lambda: 0, new_edge_labels)
# Change the pens accordingly
pen_table = {}
for id_pair, label_class in self._edge_labels.items():
pen_table[id_pair] = self._label_class_pens[label_class]
self.pen_table.overwrite(pen_table)
def handle_edge_clicked(self, id_pair):
"""
Overridden from SegmentationEdgesLayer
"""
num_classes = len(self._label_class_pens)
old_class = self._edge_labels[id_pair]
new_class = (old_class+1) % num_classes
# Update the display
self.pen_table[id_pair] = self._label_class_pens[new_class]
# For now, edge_labels dictionary will still contain 0-labeled edges.
# We could delete them, but why bother?
self._edge_labels[id_pair] = new_class
# Buffer the update for listeners
self._buffered_updates[id_pair] = new_class
# Reset the timer
self._timer.start()
def _signal_buffered_updates(self):
updates = self._buffered_updates
self._buffered_updates = {}
self.labelsChanged.emit( updates )
def OeQ_wait_for_file(filepath,timeout=10000):
"""Block loop until signal emitted, or timeout (ms) elapses."""
from PyQt4.QtCore import QEventLoop,QTimer
from os.path import isfile
import platform
import os
if platform.system() == 'Darwin':
return True
if isfile(filepath):
return True
loop = QEventLoop()
timer=QTimer()
file_result = [True]
#
def check_file(testpath):
if isfile(testpath):
timer.stop()
loop.quit()
#
timer.timeout.connect(lambda: check_file(filepath))
timer.setSingleShot(False)
timer.start(500)
#
def timed_out(file_result_flag):
file_result_flag[0]=False
loop.quit()
#
if timeout >500:
timer.singleShot(timeout,lambda: timed_out(file_result))
loop.exec_()
return file_result[0]
def download_file(self, url, path_file):
"""
download function
:param url: url path of file
:param path_file: path to save file
:return:
"""
self.file_install = path_file
self.url = url
loop = QEventLoop()
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(lambda: loop.exit(1))
timer.start(100000) # 10 second time-out
# req = QNetworkRequest(QUrl('https://www.python.org/'))
req = QNetworkRequest(QUrl(url))
result = self.manager.get(req)
result.finished.connect(lambda: self.fin_req(loop, result))
self.print_('fetching request...', self.dbg)
if loop.exec_() == 0:
timer.stop()
self.print_(
'{} is received: {}'.format(os.path.basename(path_file),
result.readAll().count()),
self.dbg)
else:
self.print_('request timed-out')
def register_timer(self, time_delta, callback):
"""Registers a callback function to be run after time_delta ms."""
timer = QTimer(self.window)
timer.setSingleShot(True)
timer.timeout.connect(callback)
timer.setInterval(time_delta)
timer.start()
class QnoteroQuery(QLineEdit):
"""The search input box"""
def __init__(self, qnotero):
"""
Constructor
Arguments:
qnotero -- a Qnotero instance
"""
QLineEdit.__init__(self, qnotero)
self.qnotero = qnotero
self.timer = QTimer(self)
self.needUpdate = True
self.textChanged.connect(self._textChanged)
def keyPressEvent(self, e):
"""
Handle key presses
Arguments:
e -- a QKeyEvent
"""
if e.key() == Qt.Key_Return:
self.qnotero.search(setFocus=False)
return
if e.key() == Qt.Key_Down:
if self.needUpdate:
self.qnotero.search(setFocus=True)
elif self.qnotero.ui.listWidgetResults.count() > 0:
self.qnotero.ui.listWidgetResults.setFocus()
self.qnotero.ui.listWidgetResults.setCurrentItem( \
self.qnotero.ui.listWidgetResults.item(0))
return
QLineEdit.keyPressEvent(self, e)
self.timer.stop()
self.timer = QTimer(self)
self.timer.setSingleShot(True)
self.timer.setInterval(getConfig("autoFire"))
self.timer.timeout.connect(self.search)
self.timer.start()
def search(self):
"""Perform a search without losing focus"""
self.qnotero.search(setFocus=False)
def _textChanged(self):
"""Set the needUpdate flag"""
self.needUpdate = True
def __init__(self, text, parent=None):
super(PopupButton, self).__init__(text, parent)
timer = QTimer()
timer.setSingleShot(True)
timer.setInterval(500)
timer.timeout.connect(self.showPopup)
self.timer = timer
self.popup = None
def repeat(self, interval, function, *args):
timer = QTimer()
timer.setSingleShot(False)
self.params[timer] = (interval, function, args)
timer.start(0)
timer.timeout.connect(self.timeout)
def __init__(self, text, parent=None):
super(PopupButton, self).__init__(text, parent)
timer = QTimer()
timer.setSingleShot(True)
timer.setInterval(500)
timer.timeout.connect(self.showPopup)
self.timer = timer
self.popup = None
def _default__band_timer(self):
""" Create the default timer for the band state changes.
"""
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(self._on_band_timer)
return timer
def _poll(self):
self.ad_status.fetch_data(self.mainwindow.client)
timer = QTimer()
timer.setSingleShot(True)
timer.setInterval(20000) # ms
timer.start()
self.connect(timer, SIGNAL('timeout()'), self._poll)
self.connect(self, SIGNAL('destroyed()'), timer.stop)
def repeat(self, interval, function, *args):
timer = QTimer()
timer.setSingleShot(False)
self.params[timer] = (interval, function, args)
timer.start(0)
timer.timeout.connect(self.timeout)
def schedule(self, interval, function, *args):
timer = QTimer()
timer.setInterval(interval * 1000)
timer.setSingleShot(True)
self.params[timer] = (None, function, args)
timer.start()
timer.timeout.connect(self.timeout)
def schedule(self, interval, function, *args):
timer = QTimer()
timer.setInterval(interval * 1000)
timer.setSingleShot(True)
self.params[timer] = (None, function, args)
timer.start()
timer.timeout.connect(self.timeout)
class Tracker(QObject):
sig_error = pyqtSignal(str)
sig_started = pyqtSignal()
sig_inview = pyqtSignal(bool) # True if in view, else False
def __init__(self, parent):
super(Tracker, self).__init__(parent)
self.name = self.__class__.__name__
# Ros Stuff
self.sub_tf = parent.sub_tf
self.pub_tf = parent.pub_tf
# Timer that checks if we have failed to start
self.timer = QTimer()
self.timer.setSingleShot(True)
self.timer.timeout.connect(self.failed)
self.timeout = 2000 #ms
self.timer.setInterval(self.timeout)
def started(self):
""" Called when starting was possible """
if self.timer.isActive():
self.timer.stop()
self.sig_started.emit()
rospy.loginfo("Started [%s]", self.name)
def onStart(self):
pass
def getStartMsg(self):
return "Default start msg.."
def getFailMsg(self):
return "Default fail msg"
def onStop(self):
pass
def start(self):
rospy.loginfo("Starting [%s]", self.name)
self.timer.start()
return self.onStart()
def failed(self, msg=None):
""" Called when starting not possible """
if msg is None:
msg = self.getFailMsg()
self.sig_error.emit(msg)
rospy.logerr("Failed to start [%s]: %s", self.name, msg)
self.stop()
def stop(self):
self.timer.stop()
rospy.loginfo("Stopping [%s]", self.name)
self.onStop()
class Tracker(QObject):
sig_error = pyqtSignal(str)
sig_started = pyqtSignal()
sig_inview = pyqtSignal(bool) # True if in view, else False
def __init__(self, parent):
super(Tracker, self).__init__(parent)
self.name = self.__class__.__name__
# Ros Stuff
self.sub_tf = parent.sub_tf
self.pub_tf = parent.pub_tf
# Timer that checks if we have failed to start
self.timer = QTimer()
self.timer.setSingleShot(True)
self.timer.timeout.connect(self.failed)
self.timeout = 2000 #ms
self.timer.setInterval(self.timeout)
def started(self):
""" Called when starting was possible """
if self.timer.isActive():
self.timer.stop()
self.sig_started.emit()
rospy.loginfo("Started [%s]" , self.name)
def onStart(self):
pass
def getStartMsg(self):
return "Default start msg.."
def getFailMsg(self):
return "Default fail msg"
def onStop(self):
pass
def start(self):
rospy.loginfo("Starting [%s]", self.name)
self.timer.start()
return self.onStart()
def failed(self, msg=None):
""" Called when starting not possible """
if msg is None:
msg = self.getFailMsg()
self.sig_error.emit(msg)
rospy.logerr("Failed to start [%s]: %s" , self.name, msg)
self.stop()
def stop(self):
self.timer.stop()
rospy.loginfo("Stopping [%s]", self.name)
self.onStop()
def repeat(self, interval, function, *args):
timer = QTimer()
timer.setSingleShot(False)
count = self.count
self.count += 1
timer.start(0)
self.app.connect(timer, SIGNAL("timeout()"), lambda: self.timeout(count, interval, function, *args))
self.timers[count] = timer
def schedule(self, interval, function, *args):
timer = QTimer()
timer.setInterval(interval * 1000)
timer.setSingleShot(True)
count = self.count
self.count += 1
timer.start()
self.app.connect(timer, SIGNAL("timeout()"), lambda: self.timeout(count, None, function, *args))
self.timers[count] = timer
class QEventLoop(QObject):
def __init__(self):
super(QObject, self).__init__()
self.hooks = []
self.waiting_for_shot = False
self.started = False
self.run_count = 0
self.timer = QTimer(self)
self.timer.setSingleShot(True)
self.timer.timeout.connect(self._run)
def start(self):
logger.debug("Starting event loop")
self.started = True
self._activate()
def stop(self):
logger.debug("Stopping event loop")
self.timer.stop()
self.started = False
def register_hook(self, hook):
logger.debug(msg("Registering hook", hook))
self.hooks.append(hook)
self._activate()
def unregister_hook(self, hook):
try:
self.hooks.remove(hook)
except:
pass
self._activate()
def _activate(self):
if len(self.hooks) > 0 and not self.waiting_for_shot and self.started:
self.waiting_for_shot = True
self.timer.start(10)
if self.run_count % 1000 == 0:
logger.debug(msg(
"Activating eventloop, timerID:", self.timer.timerId()))
@pyqtSlot()
def _run(self):
if self.run_count % 1000 == 0:
logger.debug("Running hooks")
self.run_count += 1
for h in self.hooks:
h()
self.waiting_for_shot = False
self._activate()
def __del__(self):
logger.debug("Deleting event event loop")
self.stop()
class QnoteroQuery(QLineEdit):
"""The search input box"""
def __init__(self, qnotero):
"""
Constructor
Arguments:
qnotero -- a Qnotero instance
"""
QLineEdit.__init__(self, qnotero)
self.qnotero = qnotero
self.timer = QTimer(self)
self.needUpdate = True
self.textChanged.connect(self._textChanged)
def keyPressEvent(self, e):
"""
Handle key presses
Arguments:
e -- a QKeyEvent
"""
if e.key() == Qt.Key_Return:
self.qnotero.search(setFocus=False)
return
if e.key() == Qt.Key_Down:
if self.needUpdate:
self.qnotero.search(setFocus=True)
elif self.qnotero.ui.listWidgetResults.count() > 0:
self.qnotero.ui.listWidgetResults.setFocus()
self.qnotero.ui.listWidgetResults.setCurrentItem( \
self.qnotero.ui.listWidgetResults.item(0))
return
QLineEdit.keyPressEvent(self, e)
self.timer.stop()
self.timer = QTimer(self)
self.timer.setSingleShot(True)
self.timer.setInterval(getConfig("autoFire"))
self.timer.timeout.connect(self.search)
self.timer.start()
def search(self):
"""Perform a search without losing focus"""
self.qnotero.search(setFocus=False)
def _textChanged(self):
"""Set the needUpdate flag"""
self.needUpdate = True
def get(self, url, html=None, headers=None, data=None):
"""Load given url in webkit and return html when loaded
url: the URL to load
html: optional HTML to set instead of downloading
headers: the headers to attach to the request
data: the data to POST
"""
if isinstance(url, basestring):
# convert string to Qt's URL object
url = QUrl(url)
if html:
# load pre downloaded HTML
self.setContent(html, baseUrl=url)
return html
t1 = time()
loop = QEventLoop()
self.loadFinished.connect(loop.quit)
# need to make network request
request = QNetworkRequest(url)
if headers:
# add headers to request when defined
for header, value in headers:
request.setRawHeader(header, value)
self.page().networkAccessManager().main_url = url
request.setOriginatingObject(self)
if data:
# POST request
super(Browser,
self).load(request, QNetworkAccessManager.PostOperation,
data)
else:
# GET request
super(Browser, self).load(request)
# set a timeout on the download loop
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(loop.quit)
timer.start(self.timeout * 1000)
loop.exec_() # delay here until download finished or timeout
if timer.isActive():
# downloaded successfully
timer.stop()
parsed_html = self.current_html()
self.wait(self.delay - (time() - t1))
else:
# did not download in time
common.logger.debug('Timed out: {}'.format(url.toString()))
parsed_html = ''
return parsed_html
def schedule(self, interval, function, *args):
timer = QTimer()
timer.setInterval(interval * 1000)
timer.setSingleShot(True)
count = self.count
self.count += 1
timer.start()
self.app.connect(timer, SIGNAL("timeout()"),
lambda: self.timeout(count, None, function, *args))
self.timers[count] = timer
def repeat(self, interval, function, *args):
timer = QTimer()
timer.setSingleShot(False)
count = self.count
self.count += 1
timer.start(0)
self.app.connect(
timer, SIGNAL("timeout()"),
lambda: self.timeout(count, interval, function, *args))
self.timers[count] = timer
def __init__(self, args):
super(QApplication, self).__init__(args)
self.error_msg = QErrorMessage()
self.ipcon = IPConnection()
signal.signal(signal.SIGINT, self.exit_demo)
signal.signal(signal.SIGTERM, self.exit_demo)
timer = QTimer(self)
timer.setSingleShot(True)
timer.timeout.connect(self.connect)
timer.start(1)
def _setReplyTimeout(self, reply, timeout_ms):
request_id = self._getRequestId(reply.request())
# reply is used as a parent for the timer in order to destroy
# the timer when reply is destroyed. It segfaults otherwise.
timer = QTimer(reply)
timer.setSingleShot(True)
timer_callback = functools.partial(self._onReplyTimeout,
reply=reply,
timer=timer,
request_id=request_id)
timer.timeout.connect(timer_callback)
self._reply_timeout_timers[request_id] = timer
timer.start(timeout_ms)
class ColumnResizerPrivate:
widgets = []
wrWidgetItemList = []
gridColumnInfoList = []
def __init__( self, q ):
self.q = q
self.updateTimer = QTimer( q )
self.updateTimer.setSingleShot( True )
self.updateTimer.setInterval( 0 )
QObject.connect( self.updateTimer, SIGNAL( 'timeout()' ), q.updateWidth )
def scheduleWithUpdate( self ):
self.updateTimer.start()
class BlockingInstrumentController(InstrumentController):
RX_TIMEOUT = 2000
def __init__(self, instrument_config):
InstrumentController.__init__(self, instrument_config)
# circular list of operation commands
self.commands = deque([
command for command in instrument_config.operation_commands
for i in xrange(command.param)
])
self.rx_timeout = QTimer()
self.rx_timeout.setSingleShot(True)
def run(self):
# define a timeout, if response not received send the command again
self.rx_timeout.timeout.connect(self.send_command_timeout)
self.rx_timeout.start(self.RX_TIMEOUT)
# send the first command
self.send_next_command()
InstrumentController.run(self)
def quit(self):
self.rx_timeout.stop()
InstrumentController.quit(self)
def on_new_packet_parsed(self, packet):
InstrumentController.on_new_packet_parsed(self, packet)
self.send_next_command()
def send_next_command(self):
self.new_command.emit(self.commands[0])
# advance command list
self.commands.rotate(-1)
# restart reception timeout
self.rx_timeout.start(self.RX_TIMEOUT)
def send_command_timeout(self):
self.log.warn("Timeout! response packet not received")
# send next command
self.send_next_command()
def callLater(self, timeout, callback=None):
def onTimer():
del self.timers[op]
op.notify()
def doCancel():
del self.timers[op]
timer.stop()
timer = QTimer()
QObject.connect(timer, SIGNAL('timeout()'), onTimer)
timer.setSingleShot(True)
timer.start(int(timeout * 1000))
op = AsyncOp(callback, doCancel)
self.timers[op] = (timer, op, onTimer, doCancel)
return op
def get(self, url=None, script=None, num_retries=1, jquery=False):
"""Load given url in webkit and return html when loaded
script is some javasript to exexute that will change the loaded page (eg form submission)
num_retries is how many times to try downloading this URL or executing this script
jquery is whether to inject JQuery into the document
"""
t1 = time()
self.base_url = self.base_url or url # set base URL if not set
#html = self.cache.get(key, {}).get('value')
#if html:
# self.debug('Load cache ' + key)
# self.setHtml(html, QUrl(self.base_url))
#else:
if 1:
loop = QEventLoop()
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(loop.quit)
self.loadFinished.connect(loop.quit)
if url:
self.load(QUrl(url))
elif script:
self.js(script)
timer.start(self.timeout * 1000)
loop.exec_() # delay here until download finished or timeout
if timer.isActive():
# downloaded successfully
timer.stop()
parsed_html = self.current_html()
#if key:
# self.cache[key] = html
self.wait(self.delay - (time() - t1))
else:
# didn't download in time
if num_retries > 0:
common.logger.debug('Timeout - retrying')
parsed_html = self.get(url,
script=script,
num_retries=num_retries - 1,
jquery=jquery)
else:
common.logger.debug('Timed out')
parsed_html = ''
return parsed_html
def open(self, url, timeout=60):
"""Wait for download to complete and return result"""
loop = QEventLoop()
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(loop.quit)
self.loadFinished.connect(loop.quit)
self.load(QUrl(url))
timer.start(timeout * 1000)
loop.exec_() # delay here until download finised
if timer.isActive():
#downloaded successfully
timer.stop()
return self.html()
else:
#time out
print('Request timed out:', url)
def wrapper(*args):
self = args[0]
# create a single-shot timer. Could use QTimer.singleShot(),
# but can't cancel this / disconnect it.
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(self.app.quit)
def execWithArgs():
core.mainWindow().show()
QTest.qWaitForWindowShown(core.mainWindow())
app = QApplication.instance()
app.setActiveWindow(core.mainWindow())
assert app.focusWidget() is not None
func(*args)
# When done processing these events, exit the event loop. To do so,
timer.start(0)
QTimer.singleShot(0, execWithArgs)
# Catch any exceptions which the EventLoop would otherwise catch
# and not re-raise.
exceptions = []
def excepthook(type_, value, tracebackObj):
exceptions.append((value, tracebackObj))
self.app.exit()
oldExcHook = sys.excepthook
sys.excepthook = excepthook
try:
# Run the requested function in the application's main loop.
self.app.exec_()
# If an exception occurred in the event loop, re-raise it.
if exceptions:
value, tracebackObj = exceptions[0]
raise value, None, tracebackObj
finally:
# Restore the old exception hook
sys.excepthook = oldExcHook
# Stop the timer, in case an exception or an unexpected call to
# self.app.exit() brought us here.
timer.stop()
timer.timeout.disconnect(self.app.quit)
